Serous otitis is usually caused by the Eustachian tube becoming blocked or not working properly. The Eustachian tube allows fluid from the middle ear to drain into the nasal passages. When there is a blockage, fluid accumulates in the middle ear, which can lead to hearing loss. This fluid can persist for a long time during the healing process after infection or due to allergic reactions.

The most common symptom of this condition is hearing loss. A feeling of fullness or pressure in the ear is also common. However, pain is often absent, which is an important difference between serous otitis and acute otitis. In children, serous otitis can be manifested by signs such as attention deficit, poor school performance and constantly turning up the volume on the television.

Treatment usually involves waiting for the fluid to drain spontaneously. However, in some cases medication, decongestants or antihistamines may be recommended. If the fluid persists for a long time and causes hearing loss, doctors may perform minor surgery to insert a tube into the eardrum to drain the fluid.

Yes, serous otitis is largely preventable. Avoiding exposure to allergens and cigarette smoke, and taking immune-boosting measures to prevent colds and flu can reduce the risk of developing serous otitis. It is especially important to pay attention to hygiene rules as children are more susceptible to infections.